lttng_mpi_live

gistfile1.txt

# This code will be executed by multiple processes
# each process will have a RANKID
MPI_RANK=$PALS_RANKID

# UUID for each process
THAPI_LOCK_DIR=$HOME/.lttng_mpi/$MPI_RANK
rm -rf $THAPI_LOCK_DIR
mkdir -p $THAPI_LOCK_DIR/

# Independ lttng session
export LTTNG_HOME=$THAPI_LOCK_DIR

# Our user space lttng tracepoint
export LD_PRELOAD=$home/applenco/THAPI/build/ici/libTracerZE.so:$LD_PRELOAD

lttng-sessiond --daemonize
lttng-relayd --daemonize
lttng create THAPI_$MPI_RANK --live

lttng enable-event --channel=blocking-channel --userspace lttng_ust_ze:*
lttng add-context --userspace --channel=blocking-channel -t vpid -t vtid

lttng start THAPI_$MPI_RANK

babeltrace2 \
    --component=source.ctf.lttng-live \
    --params="inputs=[\"net://localhost/host/$(hostname)/THAPI_$MPI_RANK\"],
              session-not-found-action=end" \
    --component=sink.utils.dummy |& tee $MPI_RANK.log &

pid=$!
# Some user code that we want to trace
zeinfo &> /dev/null

lttng stop THAPI_$MPI_RANK
lttng destroy THAPI_$MPI_RANK
wait $pid